Issue Archive

Chromosomal variation in long-term cultures of several related plants in triticinae

Song Xiquan, Xia Guangmin, Chen Huimin

School of Life Sciences,Shandong University.Jinan 250100,Shandong

Abstract

Tissues of Triticum aestivum and 4 related grasses in Triticinae have been cultured for a long time. During subculture, plants with a small numbers of chromosomes including Haynaldia villosa and Psathyrostachys juncea tended to increase the number of or double their chromosomes. On the contrary, two genotypes of wheat which possessed a large number of chromosomes tended to decrease the number of their chromosomes. Leymus chinensis with a chromosome number between the above two have both cells with increased and with decreased numbers of chromosomes. Among all the speciese of which calli were analyzed, Agropyron elongatum with the largest number of chromosomes was most stable, but still tended slightly to decrease the number of its chromosomes. The regeneration ability of all these calli regardless of their original chromosome numbers was related to the sum of the diploids and hypodiploids.

Key words: Wheat and related grasses;Tissue culture;Chromosome variation;Regeneration ability;Isozyme pattern

Received: 　　Accepted:

Corresponding author: 　　E-mail:

Citing This Article：

Song Xiquan, Xia Guangmin, Chen Huimin. Chromosomal variation in long-term cultures of several related plants in triticinae. Acta Physiol Sin 2000; 52 (1): (in Chinese with English abstract).